Sphagnum peat moss has been a primary component of soilless potting media for decades; however, concerns over the sustainability of harvesting peat have fostered a search for renewable media components. Anaerobically digested dairy fiber (ADDF), a by-product of methane production, shows promise as an alternative to peat. Herbaceous nursery crops including “Jack Frost” brunnera (Brunnera macrophylla I.M. Johnst), “Moonbeam” coreopsis (Coreopsis verticillata L.), “Whoops-a-Daisy” Shasta daisy (Leucanthemum × superbum Bergmans ex J.W. Ingram), “Kobold Original” liatris (Liatris spicata (L.) Willd.) and “David” phlox (Phlox paniculata L.) were grown in media containing bark-peat-perlite or bark-ADDF-perlite in a 4:2:1 proportion. All leachate was collected from pots to evaluate cumulative nitrogen and phosphate leaching. Brunnera grew to a similar size and quality in both mixes, although brunnera in the bark-ADDF-perlite mix had slightly chlorotic leaf margins. Coreopsis grew to a similar size and quality in both mixes but was slightly etiolated and chlorotic in bark-ADDF-perlite. Shasta daisy grown in bark-ADDF-perlite were larger than those grown in bark-peat-perlite. Both mixes produced similar growth and quality liatris and phlox. More ammonium, nitrate and phosphate were recovered from leachate from bark-ADDF-perlite than from bark-ADDF-perlite.
References
[1]
Handreck, K.A. and Black, N.D. (2002) Growing Media for Ornamental Plants and Turf. UNSW Press.
[2]
Chalker-Scott, L. (2014) The Myth of Permanent Peatlands. Extension Urban Horticulture, Washington State University. http://puyallup.wsu.edu/wp-content/uploads/sites/403/2015/03/horticultural-peat.pdf
[3]
Bullock, C.H., Collier, M.J. and Convery, F. (2012) Peatlands, Their Economic Value and Priorities for Their Future Management—The Example of Ireland. Land Use Policy, 29, 921-928. http://dx.doi.org/10.1016/j.landusepol.2012.01.010
[4]
Raviv, M. (2005) Production of High-Quality Composts for Horticultural Purposes: A Mini-Review. HortTechnology, 15, 52-57.
[5]
Moral, R., Paredes, C., Perez-Murcia, M.D., Perez-Espinosa, A. and Bustamante, M.A. (2011) Challenges of Composting for Growing Media Purposes in Spain and the Mediterranean Area. Acta Horticulturae, 1013, 25-39.
[6]
Chong, C. (2005) Experiences with Wastes and Composts in Nursery Substrates. HortTechnology, 15, 739-747.
[7]
Shober, A.L., Wiese, C., Denny, G.C., Stanley, C.D. and Harbaugh, B.K. (2011) Plant Performance and Nutrient Losses during Containerized Landscape Shrub Production Using Composted Dairy Manure Solids as a Peat Substitute in Substrate. HortTechnology, 21, 240-245.
[8]
Lamont, J.R. (2015) Evaluating Anaerobically Digested Dairy Fiber as a Substitute for Peat in Container Production and Nutrient Availability from Organic Fertilizers and Amendments. Master’s Theses, University of Connecticut, Storrs.
[9]
Klavon, K.H., Lansing, S.A., Mulbry, W., Moss, A.R. and Felton, G. (2013) Economic Analysis of Small-Scale Agricultural Digesters in the United States. Biomass and Bioenergy, 54, 36-45. http://dx.doi.org/10.1016/j.biombioe.2013.03.009
[10]
Miller, J. and Moyle, J. (2014) Manure as a Natural Resource: Alternative Management Opportunities. University of Maryland Extension Bulletin EB-420.
[11]
Restrepo, A.P., García J.G., Moral R., Vidal F., Pérez-Murcia M.D., Bustamante, M.á. and Paredes, C. (2013) A Comparative Cost Analysis for Using Compost Derived from Anaerobic Digestion as a Peat Substitute in a Commercial Plant Nursery. Ciencia e Investigación Agraria, 40, 253-264. http://dx.doi.org/10.4067/S0718-16202013000200002
Lopez, R.G., Dennis, J. and Behe B.K. (2009) Consumer Perceptions of Sustainably Produced Poinsettias. Greenhouse Grower.
[14]
Vaughn, S.F., Eller, F.J., Evangelista, R.L., Moser, B.R., Lee, E., Wagner, R.E. and Peterson, S.C. (2014) Evaluation of Biochar-Anaerobic Potato Digestate Mixtures as Renewable Components of Horticultural Potting Media. Industrial Crops and Products, 65, 467-471. http://dx.doi.org/10.1016/j.indcrop.2014.10.040
[15]
Hernández-Apaolaza, L., Gascó, A.M., Gascó, J.M. and Guerrero, F. (2005) Reuse of Waste Materials as Growing Media for Ornamental Plants. Bioresource Technology, 96, 125-131. http://dx.doi.org/10.1016/j.biortech.2004.02.028
[16]
MacConnell, C.B. and Collins, H.P. (2007) Utilization of Re-Processed Anaerobically Digested Fiber from Dairy Manure as a Container Media Substrate. Acta Horticulturae, 819, 297-286.
[17]
Warnke, D. (2011) Recommended Test Procedures for Greenhouse Growth Media. In: Northeast Coordinating Committee for Soil Testing, Ed., Recommended Soil Testing Procedures for the Northeastern United States, 3rd Edition, Northeastern Regional Publication No. 493, 103-110.
[18]
Murphy, J. and Riley, J.P. (1962) A Modified Single Solution Method for the Determination of Phosphate in Natural Waters. Analytica Chimica Acta, 27, 31-36. http://dx.doi.org/10.1016/S0003-2670(00)88444-5
[19]
Chaney, A.L. and Marlbach, E.P. (1962) Modified Reagents for Determination of Urea and Ammonium. Clinical Chemistry, 8, 130-132.
[20]
Cataldo, D.A., Haroon, M., Schrader, L.E. and Youngs, V.L. (1975) Rapid Colorimetric Determination of Nitrate in Plant Tissue by Nitration of Salicylic Acid. Communications in Soil Science & Plant Analysis, 6, 71-80. http://dx.doi.org/10.1080/00103627509366547
[21]
Shober, A.L., Wiese, C., Denny, G.C., Stanley, C.D., Harbaugh, B.K. and Chen, J. (2010) Plant Performance and Nutrient Losses during Containerized Bedding Plant Pro-duction Using Composted Dairy Manure Solids as a Peat Substitute in Substrate. HortScience, 45, 1516-1521.
[22]
Liao, W., Frear, C., Oakley, K. and Chen, S. (2010) Leaching-Bed Reactor for Producing Stabilized Plant Growing Media from Dairy Manure. Biosystems Engineering, 106, 278-285. http://dx.doi.org/10.1016/j.biosystemseng.2010.03.017
[23]
MacConnell, C.B. (2006) Anaerobically Digested Dairy Fiber for Use as Media Substrate. In: U.S.P.a.T. Office, Ed., Washington State University Research Foundation, Pullman.
[24]
Griffin, T.S. and Honeycutt, C.W. (2000) Using Growing Degree Days to Predict Nitrogen Availability from Livestock Manure. Soil Science Society of America Journal, 64, 1876-1882. http://dx.doi.org/10.2136/sssaj2000.6451876x
